EXCAVATOR OPERATION
4. Move the AUX port knob mounted to the operating lever to the right to release pressure in the AUX port.
1-way or 2-way CIRCUIT SELECTION VALVE OPERATION
45
A selection valve which selects 1-way or 2-way circuit of service port has been installed on the hydraulic tank. 1. When equipment which needs a 1-way circuit will be used, position the arrow, by using the selector lever, on the axis of the selection valve to the 1-way circuit position, to reduce the back pressure. 2. When equipment which needs a 2-way circuit will be used, position the arrow on the axis of the selection valve to the 2-way circuit position. A 1-way circuit..... HAMMER etc. A 2-way circuit..... THUMB, TILT BUCKET, AUGER, GRAPPLE etc. (1) AUX port knob (2) Attachment control lever (right)
(1) Selection valve (2) Selector lever
